package com.itheima.riggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.riggie.domain.Dish;
import com.itheima.riggie.domain.DishFlavor;
import com.itheima.riggie.dto.DishDto;
import com.itheima.riggie.mapper.DishMapper;
import com.itheima.riggie.service.DishFlavorService;
import com.itheima.riggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.stream.Collectors;

@Service
@Slf4j
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {
    /*
    * 新增菜品,同时保存对应的口味数据
    * */
    @Autowired
    private DishFlavorService dishFlavorService;
    @Override
    public void saveWithFlavor(DishDto dishDto) {
        this.save(dishDto);
        Long id = dishDto.getId();
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors.forEach(flavor ->{
            //设置口味所属菜品id
            flavor.setDishId(id);
        });
        //保存菜品口味数据到菜品口味表dish_flavor
        dishFlavorService.saveBatch(flavors);

    }

    @Override
    public DishDto getByIdWithFlavor(Long id) {
        //查询菜品的基本信息,从dish查询
        Dish dish=this.getById(id);
        DishDto dishDto = new DishDto();
        //把传过来的id对应的对象获取到拷贝到dishDto中
        BeanUtils.copyProperties(dish,dishDto);
        //查询当前菜品对应的口味信息,从dish_f'lavor表查询
        LambdaQueryWrapper<DishFlavor> queryWrapper=new LambdaQueryWrapper();
        queryWrapper.eq(DishFlavor::getDishId,dish.getId());
        List<DishFlavor> flavors=dishFlavorService.list(queryWrapper);
        dishDto.setFlavors(flavors);
        return dishDto;
    }

    @Override
    @Transactional
    public void updateWithFlavor(DishDto dishDto) {
        //更新dish表基本信息
        this.updateById(dishDto);

        //清理当前菜品对应口味数据---dish_flavor表的delete操作
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper();
        queryWrapper.eq(DishFlavor::getDishId,dishDto.getId());

        dishFlavorService.remove(queryWrapper);

        //添加当前提交过来的口味数据---dish_flavor表的insert操作
        List<DishFlavor> flavors = dishDto.getFlavors();

        flavors = flavors.stream().map((item) -> {
            item.setDishId(dishDto.getId());
            return item;
        }).collect(Collectors.toList());

        dishFlavorService.saveBatch(flavors);
    }
}
